1     public partial class Form1 : Form
 2     {
 3         /// <summary>
 4         /// 空闲期间执行的次数
 5         /// </summary>
 6         private int executeTimes = 0;
 7 
 8         public Form1()
 9         {
10             InitializeComponent();
11         }
12 
13         private void btnGetTime_Click(object sender, EventArgs e)
14         {
15             Application.Idle += Application_Idle;
16         }
17 
18         /// <summary>
19         /// 当程序完成处理并进入空闲状态时发生
20         /// </summary>
21         /// <param name="sender"></param>
22         /// <param name="e"></param>
23         private void Application_Idle(object sender, EventArgs e)
24         {
25             txtTime.Text = DateTime.Now.ToString();
26 
27             executeTimes++;
28             if (executeTimes==9)
29             {
30                 Application.Idle -= Application_Idle;
31                 MessageBox.Show("已经在CPU空闲时间执行10次");
32             }
33         }
34     }